<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link rel="stylesheet" href="../../css/bootstrap.css">
    <link rel="stylesheet" href="../../bootstrap-icons-1.13.1/bootstrap-icons.min.css">
</head>
<body>
    <div class="container">
        这是一个div
    </div>
    <div class="container-fluid">
        这是也是一个div
    </div>

</body>
</html>